12x-40=15x-25

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Solution for 12x-40=15x-25 equation: 



12x-40=15x-25

We move all terms to the left:

12x-40-(15x-25)=0

We get rid of parentheses

12x-15x+25-40=0

We add all the numbers together, and all the variables

-3x-15=0

We move all terms containing x to the left, all other terms to the right

-3x=15

x=15/-3

x=-5

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